August 22, 2025 — Episode 31 lava fountain and plume at the summit of Kīlauea

Lava fountains at the summit of Kīlauea during episode 31. Afternoon views of the eruption from the northwest caldera rim provided views of the inclined lava fountain from the north vent, as well as the eruption plume. During eruption episodes, sulfur dioxide (SO₂) emission rates increase. According to the National Weather Service, winds are blowing from the northeast at 15-20 miles per hour (8 meters per second), distributing volcanic gas emissions to the south and southwest of the summit caldera. USGS photo by M. Patrick.